Breast (sagittal section): gland secreting mother's milk.
Pectoralis major muscle: large muscle of the chest.
Superficial fascia: superficial membrane of a breast.
Areola: muscle related to the nipple.
Nipple: conical bump that forms the point of the breast.
Lactiferous sinus: cavity for milk.
Lactiferous duct: milk tube.
Adipose tissue (fatty tissue): tissue formed of fat.
Glandular lobe: gland.